Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeIinc.java @ 3945:8ed53447f690
Merge
author | iveresov |
---|---|
date | Thu, 15 Sep 2011 12:44:09 -0700 |
parents | c18cbe5936b8 |
children |
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/* * Copyright (c) 2002, 2005, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ package sun.jvm.hotspot.interpreter; import sun.jvm.hotspot.oops.*; import sun.jvm.hotspot.utilities.*; public class BytecodeIinc extends BytecodeWideable { BytecodeIinc(Method method, int bci) { super(method, bci); } public int getIncrement() { // increment is signed return (isWide()) ? (int) javaShortAt(3) : (int) javaByteAt(2); } public void verify() { if (Assert.ASSERTS_ENABLED) { Assert.that(isValid(), "check iinc"); } } public boolean isValid() { return javaCode() == Bytecodes._iinc; } public static BytecodeIinc at(Method method, int bci) { BytecodeIinc b = new BytecodeIinc(method, bci); if (Assert.ASSERTS_ENABLED) { b.verify(); } return b; } /** Like at, but returns null if the BCI is not at iinc */ public static BytecodeIinc atCheck(Method method, int bci) { BytecodeIinc b = new BytecodeIinc(method, bci); return (b.isValid() ? b : null); } public static BytecodeIinc at(BytecodeStream bcs) { return new BytecodeIinc(bcs.method(), bcs.bci()); } public String toString() { StringBuffer buf = new StringBuffer(); buf.append("iinc"); buf.append(spaces); buf.append('#'); buf.append(Integer.toString(getLocalVarIndex())); buf.append(" by "); buf.append(Integer.toString(getIncrement())); return buf.toString(); } }